A great many movies flopped at the box office this year -- including Zac Efron's "We Are Your Friends," "Jem and the Holograms" and the Hugh Jackman movies "Pan" and "Chappie" -- but, let's be honest, a lot of moneymakers were also not that great.

With the help of scores on Rotten Tomatoes, here are some of the worst (or at least most disappointing) movies of 2015 -- Some we had high hopes for, and others we rightly suspected all along were going to suck.